Free reference software for linux

Web Reference Database is a bibliographic manager that can import and export references in various formats (including BibTeX, Endnote, MODS XML, and OpenOffice).
It can make formatted lists of citations in HTML, RTF, PDF, or LaTeX, and offers powerful searching, rich metadata, and RSS support
Enhancements:
- This release offers major function enhancements and bugfixes.
- Batch import from various bibliographic formats (including BibTeX, Endnote, RIS, ISI, and MODS XML) is now supported, as is import from a PubMed ID.
- An OpenDocument spreadsheet for use with OpenOffice.org can be exported, and formatted citation lists can be generated as HTML, RTF, PDF, or LaTeX. An SRU/W service and support for unAPI, OpenURL, and COinS metadata have been added.
- These allow the data to be used by the next generation of bibliographic clients.
- A new command line client is also included.

Objective Modula-2 programming language is a hybrid between Smalltalk and Modula-2 based on the object model and runtime of Objective-C.
The design is an example how native Cocoa/GNUstep support can be added to static imperative programming languages without implementing a bridge.
Objective Modula-2s scope encompasses the design of the Objective Modula-2 programming language and the implementation of a compiler to implement it. The initial compiler will generate Objective-C source code.
Enhancements:
- This code is used to verify ideas and concepts which come up in the course of defining the language.
- It is in an early stage, incomplete and subject to frequent changes.

Convert::Bencode_XS is a Perl module for faster conversions to/from Bencode format.
SYNOPSIS
use Convert::Bencode_XS qw(bencode bdecode);
use Data::Dumper;
print "Serializing:n", bencode([123, [], "XXX"]), "nn";
print Dumper bdecode(d3:fool3:bar4:stube6:numberi123ee);
__END__
Serializing:
li123el0:e3:XXXe
$VAR1 = {
number => 123,
foo => [
bar,
stub
]
};
bencode($stuff)
Returns a bencoded string representing whats in $stuff. $stuff can be either a scalar, an array reference or a hash reference. Every nesting of these data structures is allowed, other ones will croak.
bdecode($bencoded)
Returns a Perl data structure: it could be either a scalar, array reference or hash reference depending on whats in $bencoded. Dictionaries are converted in hashes, lists in arrays, scalars in strings. If $COERCE (see below) is set to a false value then scalars encoded like integers will be cleanse() before being returned so that a re-serialization of the structure will give back exactly the same bencoded string.
Enhancements:
- Perl

RefDbg project is a GObject reference count debugger GObject is part of the glib library (not to be confused with glibc) which forms the basis of GTK+ (the Gimp ToolKit), Gnome, GStreamer and many other projects. The GObject library adds object oriented stuff to C which by itself lacks object oriented features.

Since C lacks garbage collection, a reference counting system is used. Each object has a count of how many other references (pointers) there are to it. Reference count bugs can be very hard to track down and can lead to crashes and memory leaks. Refdbg is a tool that can be used interactively with GDB to log, display and break on reference count activity, thereby making this task easier.

Drugref provides a free pharmaceutical reference information database and infrastructure.

Drugref is a collaborative effort to create and maintain a database of pharmaceutical reference information, tagged by language, country, and reference source.

A Web interface written in PHP4 allows the community of health professionals to maintain and review content.

The database structure, implemented in PostgreSQL, is designed to facilitate automated decision support.

"Tagging" allows one to import information from any source in parallel, thus allowing drugref to work as a generic interface to any kind of (comercially or freely) available drug reference information.

Perl6::Parameters is a module with Perl 6-style prototypes with named parameters.

SYNOPSIS

use Perl6::Parameters;

sub mysub($foo, ARRAY $bar, *%rest) {
...
}

DETAILS

Perl6::Parameters is a Perl module which simulates Perl 6s named parameters. (When I talk about "named parameters" I mean something like the parameters youre used to from C, Java and many other languages--not pass-a-hash-with-the-parameters-in-it things.)

Like most other programming languages, Perl 6 will support subroutines with pre-declared variables the parameters are put into. (Using this will be optional, however.) This goes far beyond the "line-noise prototypes" available in Perl 5, which only allow you to control context and automatically take references to some parameters--lines like my($first, $second)=(@_) will no longer be necessary.

Although Perl 6 will have this, Perl 5 doesnt; this module makes it so that Perl 5 does. It uses some other Perl 6-isms too, notably the names for builtin types and the unary-asterisk notation for flattening a list.

Crafting Parameter Lists

Crafting parameter lists is simple; just declare your subroutine and put the parameters separated by commas or semicolons, in parenthesis. (Using a semicolon signifies that all remaining parameters are optional; this may not be available this way in Perl 6, but Im assuming it is until I hear otherwise.)

Most parameters are just variable names like $foo; however, more sophisticated behavior is possible. There are three ways to achieve this.

The first way is by specifying a type for the variable. Certain types make the actual parameters turn into references to themselves:

ARRAY $foo

This turns an array into a reference to itself and stores the reference into $foo.

HASH $foo

This turns a hash into a reference to itself and stores the reference into $foo.

CODE $foo

This turns a subroutine into a reference to itself and stores the reference into $foo.

SCALAR $foo

This turns a scalar into a reference to itself and stores the reference into $foo.

GLOB $foo

This turns a typeglob into a reference to itself and stores the reference into $foo. Typeglobs will be going away in Perl 6; this type exists in this module so that its useful for general use in Perl 5.

REF $foo

This turns any parameter into a reference to itself and stores it into $foo.

This only works in Perl 5.8. Otherwise, its treated the same as any other unrecognized type name.

AnythingElse $foo

This has no effect in this module; its treated as though youd typed $foo without the AnythingElse.

For example, if a subroutine had the parameters ($foo, HASH $bar, CODE $baz) and was called with ($scalar, %hash, &mysub) the subroutine would get the contents of $scalar, a reference to %hash and a reference to &mysub.
The second way is by supplying an actual array or hash as a parameter name. This requires an array or hash to be passed in for that parameter; it preserves the length of the array or hash.

The final way is only available for the last parameter: if an array or hash is prefixed with an asterisk, that array or hash will be filled with any additional parameters.

LinkBrowser is a program for browsing the links in HTML documents and downloading the files that they reference.
Basically, this program is like a normal Web browser, but instead of rendering the HTML it just shows a table of all the files that the html references. The files can be downloaded in batches.
Enhancements:
- URL parsing has been enhanced and build issues with Java 1.5 have been fixed.